TMPM330 - Keil

7.1.3 Port C (PC0~PC3)
Under development
TMPM330
The port C is a 4-bit input port. Besides the general-purpose input function, the port C functions as the
analog input port of the A/D converter.
A reset allows all bits to perform as the general-purpose input port and the port C to be put in input
disable mode.
Set the input enable control register when you use the port C as an input port. The setting is not
required when you use it as an analog input port of the A/D converter.
Port C register
7 6 5 4 3 2 1 0
PC Bit Symbol - - - - PC3 PC2 PC1 PC0
(0x4000_0080) Read/Write R R/W
After reset “0” is read. “0”
Port C pull-up control register
7 6 5 4 3 2 1 0
PCPUP Bit Symbol - - - - PC3UP PC2UP PC1UP PC0UP
(0x4000_00AC) Read/Write R R/W
After reset 0 0 0 0 0
Function “0” is read. Pull-up Pull-up Pull-up Pull-up
0:off 0:off 0:off 0:off
1:on 1:on 1:on 1:on
Port C input enable control register
7 6 5 4 3 2 1 0
PCIE Bit Symbol - - - - PC3IE PC2IE PC1IE PC0IE
(0x4000_00B8) Read/Write R R/W
After reset 0 0 1 1 0
Function “0” is read. Input Input Input Input
0:disabled 0:disabled 0:disabled 0:disabled
1:enabled 1:enabled 1:enabled 1:enabled
TMPM330(rev0.4) 7-5
Input/Output Ports